ATXMEGA128A3-AU Atmel, ATXMEGA128A3-AU Datasheet - Page 7

• Manufacturer Part Number: ATXMEGA128A3-AU
• Description: MCU AVR 128K FLASH 1.8V 64-TQFP
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA128A3-AU

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 16x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: ATXMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit, 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 50
• Number Of Timers: 7
• Operating Supply Voltage: 1.6 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 2 Channel
• On-chip Dac: 2 bit, 1 Channel
• Package: 64TQFP
• Device Core: AVR
• Family Name: XMEGA
• Maximum Speed: 32 MHz
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6. AVR CPU
6.1
6.2
8068T–AVR–12/10
Features
Overview
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The XMEGA A3 uses an 8/16-bit AVR CPU. The main function of the AVR CPU is to ensure cor-
rect program execution. The CPU must therefore be able to access memories, perform
calculations and control peripherals. Interrupt handling is described in a separate section.
6-1 on page 7
Figure 6-1.
The AVR uses a Harvard architecture - with separate memories and buses for program and
data. Instructions in the program memory are executed with a single level pipeline. While one
instruction is being executed, the next instruction is pre-fetched from the program memory.
8/16-bit high performance AVR RISC Architecture
32x8-bit registers directly connected to the ALU
Stack in RAM
Stack Pointer accessible in I/O memory space
Direct addressing of up to 16M bytes of program and data memory
True 16/24-bit access to 16/24-bit I/O registers
Support for 8-, 16- and 32-bit Arithmetic
Configuration Change Protection of system critical features
– 138 instructions
– Hardware multiplier
Peripheral
Module 1
shows the CPU block diagram.
CPU block diagram
CONTROL
STATUS/
Program
Counter
OCD
Peripheral
Module 2
Instruction
Instruction
Program
Register
Memory
Decode
Flash
DATA BUS
SRAM
DATA BUS
ALU
EEPROM
32 x 8 General
Registers
Purpose
Multiplier/
DES
PMIC
XMEGA A3
Figure
7